The ZP-SCB25A SPD surge backup protector (SCB for short) is an external disconnect device for the surge protector of the low-voltage power supply system, and can break the power frequency overcurrent caused by the failure of the surge protector. Both the circuit breaker function and the power frequency freewheeling protection function are integrated. 0769-8323 8609 / 134 2515 7172 Consult
The ZP-SCB25A SPD surge backup protector (SCB for short) is an external disconnect device for the surge protector of the low-voltage power supply system, and can break the power frequency overcurrent caused by the failure of the surge protector. Both the circuit breaker function and the power frequency freewheeling protection function are integrated. SCB is used in series with SPD, suitable for power distribution and control systems with AC 50/60 Hz and rated working voltage 230/400V. It can effectively distinguish lightning current and power-frequency leakage current, and will not trip under the impact of large lightning current, and trip in time when power-frequency low current is applied, which can effectively prevent the SPD from catching fire when the power-frequency low current fails. And the greater the power frequency leakage current, the faster the tripping speed. The internal remote signal terminal can be integrated to feedback the status of the protector in real time.
Modular structure can perfectly match various low voltage surges Protector
For very important electrical equipment, once the SPD backup protector trips, the equipment will lose lightning protection.
SCB with auto-reclosing device is suitable for unattended important power distribution room,if SPD backup protector is intendedoutsidetrip,
Auto-reclosing can be reclosed immediately to ensure the continuous and effective lightning protection of the equipment!
SCB dedicated remote signaling contact accessory (1 normally open NO+1 normally closed NC) SCB can be installed on the side of the remote signaling accessory RS- 3.
When any extreme When the SCB is tripped, the closing switch drives the remote signal switch to actuate the remote signal switch.
installed on the side of the SCB, when any one-level SCB trips, it will send out a remote signal.
|SCB product model||ZP-SCB25A|
|SCB according to the standard||NB/T 42150-2018|
|Rated working voltage Ue||230V /400V|
|Nominal discharge current In (8/20μs)||25kA|
|Impulse discharge current Iimp (10/350μs)||25kA|
|SCB short circuit breaking capacity Isc||100kA/65kA|
|SCB power frequency trip current Ii||3A|
|Power frequency short circuit current breaking time||<0.1S|
|Mechanical life||10000 times|
|Electrical life||10000 times|
|Terminal maximum wiring||25mm²|
|range of working temperature||-40℃~+80℃|
|Shell material||Thermoplastic, UL94-V0|
|SPD combination mode||1P, 2P, 3P, 4P|